Are you saying, "no DVD of any movie can ever match" here? Because I'm pretty damn sure that I can pick out a DVD that is pretty comparable to that screenshot.
No, the same movie. I bet for 95+% of that movie the Blu Ray copy looks better. Maybe some DVD somewhere looks better than the worst Blu Ray, in fact I have seen that for extra content where the scaling was off. But for the same movie the Blu Ray is going to look better than the DVD, the Netflix copy or iTunes copy even if its a crappy Blu Ray if the original source is the same.
And then the great Blu Rays are simply AMAZING!
You missed out the key word 'if'. If I already have a movie on DVD, why should I buy it on BR, so I can watch the same version as I have on DVD?
Putting 'Aliens' on BR would have been utterly pointless if they had just done a little work on actors' faces like they evidently did for 'For a Few Dollars More', it's the rest of the movie (Aliens) that needed the work. I already have most of the Star Trek TNG seasons on DVD, and I would feel absolutely cheated if I shelled out for BR versions to find that there are still obvious artifacts left over from a cheap-and-cheerful digital transfer, even if I could make out some pores on Picard's face!
You pay to get the Blu Ray because its giving you the extra resolution and quality only a Blu Ray can provide.
You say you are viewing on a 32 inch screen, so it might be a difference in perspective. Not to be all classic ATOT, but for reference I have 3 TVs bigger than 50 inches- one is 65 inches. On that 65 inch at a viewing distance of 7-ish feet, I can EASILY see the difference between not even Blu Rays and DVDs, but 720p sources and 1080p sources. I want as much visual data to feed those screens as I can get, often leading to a richer overall experience.
TNG is a GREAT example. Even with the two poorly done seasons, you get more out of the Blu Rays than "pores on Picard's face." You can see the detail they put into sets (or not on the first season) and more than anything I can see the many expressions on Riker's face that are simply too blurry to see at 480p. Thanks to the TNG Blu Rays, Riker is now my second favorite TNG character because I can see all the whimsical faces he makes. TNG is made modern and new, and isn't left as a relic to compare poorly to modern content shot with HD cameras.
Often its the HD audio that provides the extra experience. On my setup rain actually sounds like rain, and voices are crystal clear with that uncompressed Blu Ray track. Very few DVDs had comparable DTS tracks to what almost every Blu Ray has.
DVD's are simply too limited of technology: 8GB is too small, MPEG2 is too primitive and prone to macroblocking, DVD audio standards were too puny, and too much content on DVDs are interlaced (a rarity on Blu Rays). I love DVDs for providing a source for digital content- it is much better to rip a DVD then have to record a VHS tape a 1X speed. But I simply won't watch a movie that has been release in the last 15 years on DVD on my setup when Blu Rays are always a huge upgrade.
If I didn't have a nice HT setup, DVDs would be fine. I get that. But if you have the setup, the difference between Blu Rays and DVDs is often night and day.